Cleaned up command line arguments handling in chsmack.

Argument handling code looks terrible at the moment in chsmack.
Migrated to getopt_long().
Added AUTHORS file.
Revert "Avoid memory allocation while opening smackfs files."

This reverts commit 6c1d15b1fe420b848d7afdd0a7ef0c20dfdcc08e.
Removed redundant is_smackfs_mounted().

This functionality is fully handled in the library initialization.
Major documentation cleanup.

smack.h was starting to rotten so I did a major cleanup for it.
Also fixed couple of minor doxygen issues by removing deprecated
variables.
Update version and maintainer information

Set version information to 1.1 for the next libsmack release.
Change maintainer email from @intel.com to @linux.intel.com.
Cleaning error logs for rules applying utilities

Removed perror logs from main utilities files. Moved error logs
inside /utils/common.c. Errors are logged from I/O operations and
applying rules/cipso from files.